VAN DE GRAAFF, W. Facies distribution and basin configuration in the Pisuerga area before the Leonian Phase. Trabajos de Geología, [S. l.], v. 3, n. 3, p. 161–179, 1971. DOI: 10.17811/tdg.3.1971.161-179. Disponível em: https://reunido.uniovi.es/index.php/TDG/article/view/2673. Acesso em: 7 may. 2024.